Evernote is a powerful tool not just for capturing information, but also planning projects and tasks. My Simple Curiosity has a very detailed guide to incorporating Evernote templates into your GTD workflow for project planning, plus sample templates to get you started.

Here's how it works:
You can create a template out of any note you make in Evernote by exporting it as a file with the ENEX format. Save it to a folder like "Evernote Templates" under your Documents folder and then edit the note using a text editor to delete the timestamp.

You'll also need to create a script (using AutoHotKey in Windows or AppleScript Editor on a Mac) that will enable you to quickly import the template file back into Evernote as a new note, complete with the proper creation date and saved tags.

Then, any time you want to make a new note from that template, you can simply press a keyboard shortcut in Evernote on Windows or trigger the script to run from your OS X menu bar.